How to fix the Oracle error ORA-54529: geometry should have multi-level hierarchy (like triangle)?

In this post, you’ll learn more about the Oracle ErrorORA-54529: geometry should have multi-level hierarchy (like triangle) with the details on why you receive this error and the possible solution to fix it.

Oracle Error Description

ORA-54529: geometry should have multi-level hierarchy (like triangle)

Reason for the Error ORA-54529: geometry should have multi-level hierarchy (like triangle)

The geometry did not have the multi-level hierarchy required for this operation. For example, if the parameter to element extractor (hierarchy level) is not LOWER_LEVEL, but the geometry etype is ETYPE_SOLID and gtype is GTYPE_SOLID, an extract operation is not allowed, because a simple solid can only be decomposed into lower level geometries, such as composite surfaces.

How to fix the Error ORA-54529: geometry should have multi-level hierarchy (like triangle) ?

You can fix this error in Oracle by following the below steps

Ensure that the geometry has the appropriate hierarchy. For example, if the geometry etype is ETYPE_SOLID and gtype is GTYPE_SOLID, the parameter to element extractor (hierarchy level) should be LOWER_LEVEL.